分析:(1)、(2)、(3)都需要把原題進(jìn)行整理,然后運(yùn)用乘法的分配律進(jìn)行計(jì)算即可.
(4)題需要把分?jǐn)?shù)拆項(xiàng)直接簡(jiǎn)算;
(5)、(6)根據(jù)四則混合運(yùn)算的運(yùn)算順序計(jì)算即可
解答:解:(1)3.14×43+7.2×31.4-150×0.314,
=3.14×43+72×3.14-15×3.14,
=3.14×(43+72-15),
=3.14×100,
=314;
(2)
×+×,
=
×+
×
,
=
×(
+),
=
;
(3)2007+2008+2009+2008×97,
=2007+1+2008+2009-1+2008×97,
=2008×3+2008×97,
=2008×(3+97),
=200800;
(4)1-
+-+,
=1-(
+)
++-(
+)
++,
=1-
-++-
-++,
=
+,
=
;
(5)4.1-2.56÷(0.18+0.62)
=4.1-2.56÷0.8,
=4.1-3.2,
=0.9;
(6)
-×
+÷,
=
-+,
=
-+,
=
,
=1
;
點(diǎn)評(píng):完成本題要注意分析式中數(shù)據(jù),運(yùn)用合適的簡(jiǎn)便方法計(jì)算.